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Engine lubrication > < Servicing valve gear

Leon Mk1

Checking compression pres- sures
   
Checking compression pres- sures
Special tools and workshop equipment required
t  Spark plug wrench -T20028-
t  Torque wrench -SAT 8010-
t  Compression tester -V.A.G 1763-

Test conditions
l  Engine oil temperature must be at least 30 °C.
Work sequence
–  Remove air cleaner: → Chapter
–  Remove spark plugs using spark plug wrench -T20028-.
   
–  Pull connector off Hall sender.
–  Remove fuse 40 for fuel pump.
–  Check compressions with compression tester -V.A.G 1381-/-V.A.G 1763-.
  Note!
See relevant test unit operating instructions for instructions on how to use test unit.
–  Operate starter until tester shows no further pressure increase.
Compression pressure:
New: 10...15 bar Wear limit: 7 bar
Permissible difference between all cylinders: 3 bar
–  Insert spark plugs with spark plug wrench -T20028- and tighten to 30 Nm.
–  Interrogate fault memory: → Vehicle diagnosis, testing and information system VAS 5051
  N13-0472

Engine lubrication > < Servicing valve gear